79551655 has 4 divisors (see below), whose sum is σ = 95461992. Its totient is φ = 63641320.

The previous prime is 79551649. The next prime is 79551707. The reversal of 79551655 is 55615597.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55615597 = 379 ⋅146743.

It is not a de Polignac number, because 79551655 - 2¹³ = 79543463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7955161 + ... + 7955170.

It is an arithmetic number, because the mean of its divisors is an integer number (23865498).

Almost surely, 2^79551655 is an apocalyptic number.

79551655 is a deficient number, since it is larger than the sum of its proper divisors (15910337).

79551655 is a wasteful number, since it uses less digits than its factorization.

79551655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15910336.

The product of its digits is 236250, while the sum is 43.

The square root of 79551655 is about 8919.1734482518. The cubic root of 79551655 is about 430.0804879078.

The spelling of 79551655 in words is "seventy-nine million, five hundred fifty-one thousand, six hundred fifty-five".